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    • WO2002028529A2 Ion exchanging resins for lead cyanide

      ION EXCHANGE RESINS FOR GOLD CYANIDE EXTRACTION. FIELD OF THE INVENTION. The present invention relates to novel functionalized piperazine polymeric supports and their application as polymeric adsorbents to extract metal cyanides, particularly lead cyanide, from solutions containing mixtures of certain Group IB

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    • NOVEL APPLICATION OF A GOLD CYANIDE

      A leadselective ion exchange resin, containing tributylamine functional groups (TBA) for the recovery of lead from cyanide leach solutions was developed by Mintek in 1992 and is known as MINIX [1, 2].

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    • 48. Adsorption of lead from cyanide solutions by anionic

      Download Citation on ResearchGate 48. Adsorption of lead from cyanide solutions by anionic resins Adsorption of anions on both strong and weakbase ionexchange resins is a function of the

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    • Adsorption of Copper Cyanide on Chemically Active

      Adsorption of Copper Cyanide on Chemically Active Adsorbents J. S. Lee , N. V. Deorkar , and L. L. Tavlarides * Department of Chemical Engineering and Materials

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    • WO1997010367A1 Recovery of lead using extraction

      Recovery of lead from alkaline cyanide leach solutions using ion exchange adsorbents, comprising (a) contacting the cyanide leach solution containing the lead with an extraction reagent comprised of a solid adsorbent carrying an organic base functionality of a compound having a pKa between about 914, such as a guanidyl functionality, to adsorb lead and eluting the adsorbed lead

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    • GoldPrecious Metals Conference purolite

      Testwork was conducted to compare the efficacy of different types of adsorbents for lead recovery GoldSelective Ion Exchange Resins A disadvantage of the use of SBA resins for lead cyanide recovery is the fact that thiourea is a

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    • ION EXCHANGE RESINS diaion

      DIAION / SEPABEADS IERs and Synthetic Adsorbents. DIAION products are high quality ion exchange resins, chelating resins, and synthetic adsorbents produced by Mitsubishi Chemical Corporation and its subsidiary producers.

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    • GOLD RECOVERY FROM COPPERRICH ORES

      THE PUROLITE S992 GOLDSELECTIVE ION EXCHANGE RESIN J. van Deventer*, M. Kotze**, V Yahorava** An anionic leadcyanide complex is formed that is extractable by basic resins. Other metals All the adsorbents showed good selectivity for lead

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    • Gold Gold Ion Exchange

      After chlorina173; tion, lead is recovered from the chloride solution by reduction of the lead chlorocomplex ion to metallic lead followed by redissolution via conventional cyanidation. Research has been carried out to search for a costeffective method to recover lead directly from the chloride solutions and to avoid the neutralization and

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    • Gold recovery from cyanide solutions with a new fibrous

      The present work describes the results of lead cyanide adsorption by new ionexchange hollow fibers prepared by the amination of sulfochlorinated polyethylene. The fibers, chopped into suitably sized pieces, showed very fast adsorption and desorption of lead from mixed cyanide solutions.

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    • THE CHEMISTRY OF THE CARBONINPULP PROCESS

      THE CHEMISTRY OF THE CARBONINPULP PROCESS Michael David Adams A Thesis submitted to the Faculty of Science University of the Witwatersrand, Johannesburg Synthetic polymeric adsorbents with characteristics similar to activated carbons were also studied. The Gold(XII) Cyanide Experiments 23 g) Silver and Mercury Experiments 23 h

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    • Detection and Recovery of Palladium, Gold and Cobalt

      Dec 06, 20150183;32;Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagonwheelshaped Pores. consumer electronics, fine jewelry, preparation of dental materials, photovoltaic fuel cells, and lithium ion batteries (LIB)

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    • Recovery of lead from carbonaceous ores by simultaneous

      Feb 09, 19880183;32;Recovery of lead from carbonaceous ores by simultaneous chlorine leach and ion exchange resin adsorption process because carbonaceous and other deleterious impurities often associated with carbonaceous ores react with or quot;tie upquot; lead cyanide complexes. Example I illustrates a distinct advantage for resins over carbon as lead

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    • Ion Exchange for Recovery of Precious Metals InfoHouse

      Ion Exchange for Recovery of Precious Metals By W. H. Waitz Jr. a in this review of procedures for recovering precious metals by ion exchange, reslns are discussed and techniques for lead, sliver and the platinumgroup metals are hlghilghted. r xide Studies on the recovery of lead from the more com *37 cyanide solutions were first done by

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    • GOLD ADSORPTION FROM ALKALINE AUROCYANIDE

      Certain neutral polymeric adsorbents such as the polyacrylates XAD7 and XAD8 were discovered to exhibit modest capacities for the loading of lead from alkaline cyanide

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    • Processing Gold Ores Using Heap LeachCarbon

      Processing Gold Ores Using Heap LeachCarbon Adsorption Methods UNITED STATES DEPARTMENT OF THE INTERIOR . Processing lead ores using heap leachsarbon adsorption ring carbonaceous materials in sedimentarytype lead ores act as adsorbents for the lead dissolved by cyanide solutions.

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    • The Chemistry of the Extraction of Gold SAIMM

      The Chemistry of the Extraction of Gold M.J. Nicol, C.A. Fleming and R.L. Paul give rise to a free hydrated ion and free chloride. Instead, the Goldcyanidephosphine complexes have been extensively studied, and were last reviewed in 1974 (Rigo and Turco,

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    • Recovery of lead from secondary sourcesA review

      This paper presents an overview of the various methodologies used in the recovery of lead from secondary sources. coagulants, adsorbents, agglomeration solvents, ion exchange resins and biosorbents in real situations and hopes to provide insights into recovery of lead from spent sources. Recovery and refining of Au by leadcyanide

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    • Comparison of resininsolution and carbonin

      Testwork was done with two different adsorbents, DowexMinix leadselective resin and activated carbon, to detemine their relative lead from cyanide leach liquors1. Resins have potentially The ionexchange circuit is designed in such a way that maximum lead breakthrough through the lead (first) column

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    • Thiourea Gold Leaching Metallurgist amp; Mineral Processing

      Thiourea Gold Leaching. Table of Contents thus reducing the availability of cyanide ion for lead dissolution, as well as increasing cyanide consumption. The presence of elemental lead on the surface of adsorbents suggests some reduction mechanism accompanying the adsorption of leadthiourea complex.

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    • Selective Removal of Mercury from Gold Bearing

      Both adsorbents show unacceptable levels of lead adsorption with the as received samples whilst adding 100 ppm of cyanide led to less than 1% of the lead being adsorbed with Smopex 174;112 and undetectable lead adsorption with FS1

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    • Thiourea Gold Leaching Metallurgist amp; Mineral

      Thiourea Gold Leaching. Table of Contents thus reducing the availability of cyanide ion for lead dissolution, as well as increasing cyanide consumption. The presence of elemental lead on the surface of adsorbents suggests some reduction mechanism accompanying the adsorption of leadthiourea complex.

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    • Competitive Adsorption of Gold Cyanide and Organic

      Request PDF on ResearchGate Competitive Adsorption of Gold Cyanide and Organic Compounds onto Porous Adsorbents Activated carbon has had a tremendous impact on the technology of lead recovery

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    • The Adsorption of Gold Cyanide onto Porous

      particle surface diffusion was applied to the profiles for the uptake of lead cyanide by activated carbon or ionexchange resins in a stirred batch reactor in order to estimate kinetic parameters. It is further assumed that ADSORPTION OF GOLD CYANIDE ONTO POROUS ADSORBENTS 1855 c/co 1 0.8

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    • The recovery of lead cyanide by acetylene black

      The lead elution profile, using a 2% NaOH solution, is similar for ACB and activated carbon, confirming adsorption rather than ion exchange to be the mechanism for lead cyanide recovery by ACB. A higher temperature favoured the elution of lead from ACB in all experiments conducted, as indicated by Figure 5.

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    • MERCURY CYANIDE CONTAMINATION OF GROUNDWATER

      MERCURY CYANIDE CONTAMINATION OF GROUNDWATER FROM GOLD MINING AND PROSPECTS FOR REMOVAL Cynthia A. Coles, Faculty of Engineering and Applied Science Memorial University of Newfoundland, St

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    • Competitive Adsorption of Gold Cyanide and Organic

      This paper deals with the competitive adsorption of organic compounds and lead cyanide onto activated carbon, ionexchange resin, ionexchange fiber, and membrane. Loadings of organic compounds were measured on lead equilibrated adsorbents and compared to loadings on adsorbents.

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    • MERCURY CYANIDE CONTAMINATION OF

      MERCURY CYANIDE CONTAMINATION OF GROUNDWATER FROM GOLD MINING AND PROSPECTS FOR REMOVAL Cynthia A. Coles, Faculty of Engineering and Applied Science Memorial University of Newfoundland, St

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    • NOVEL APPLICATION OF A GOLD CYANIDE SELECTIVE RESIN

      A leadselective ion exchange resin, containing tributylamine functional groups (TBA) for the recovery of lead from cyanide leach solutions was developed by Mintek in 1992 and is known as MINIX [1, 2].

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    • Investigation of the Potential of Activated and Magnetic

      Fulltext Investigation of the Potential of Activated and Magnetic Activated Carbon Produced from Turkish Lignite as Gold Adsorbents

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